I have installed the dictionary.com search addon, but I'm used to searching through dictionary.com as a search engine. In other words, if I want a definition of "sleeper," I'm used to typing in d.com sleeper (d.com is the keyword, then a space, and then my search term). But now when I do this, I simply get "d.com sleeper" displayed with search results from my default search engine. What do I need to do---add some combination of % or something?